Underfloor heating in Hounslow

Postcode districts: TW3, TW4, TW5, TW7, TW8, TW13 + 2 more
Nearby: Isleworth, Heston and Feltham
Guide price: £900–£3,100
Typical time on site: 1–2 working days (added to a fit)
Water: Very hard across most of Greater London
Survey: Free, at your home

What does bathroom underfloor heating cost in Hounslow?

Our guide price for bathroom underfloor heating in Hounslow is £900–£3,100 including VAT. Labour costs in London put local prices at about 25% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.

Typical

Electric mat

£900–£1,900

Insulation board

Electric, larger room

£1,500–£2,800

Electrician sign-off

Wet system

£1,900–£3,800

Pipes linked to the heating

Guide prices for Hounslow including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Hounslow

We work right across Hounslow — TW3, TW4, TW5 and 5 more postcode districts — and in neighbouring Isleworth and Heston.

London homes in Hounslow often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. Where a Hounslow home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric. Whether your Hounslow bathroom is a small en-suite or a large main bathroom, the mat is sized to the open floor, not the whole room.

Most of Greater London has very hard water. Hard water leaves white marks on dark grout and gloss tiles, so matt finishes and stain-resistant grout are the practical choice. Hardness varies street by street, so check the figure for your postcode with your water supplier.

What the job includes

A check of the floor construction, the room's heat loss and where the thermostat and supply will go
Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
For wet systems, pipes in low-profile boards or screed connected to a manifold or single-zone kit, with any boiler work done by a Gas Safe registered engineer
The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit

Decisions to make first

Insulation board thickness

Thicker boards warm up faster and lose less heat downwards, but raise the floor; the right choice depends on the door threshold and the next room.

Thermostat

A simple dial thermostat, a programmable one with set times, or a smart thermostat you can control from your phone.

Rules that apply in England

In England, a new circuit for underfloor heating is notifiable under Part P, and so is connecting it to an existing circuit in a room with a bath or shower. The electrician either self-certifies through a competent person scheme or the work is notified to building control.

More about underfloor heating

Underfloor heating in Hounslow: questions

How much should I budget for bathroom underfloor heating in Hounslow?

Bathroom underfloor heating in Hounslow usually costs £900–£3,100 including VAT. Where you land in that range depends on the size of the room, whether the layout changes and the products you choose. After the free survey you get an itemised written quote, and the price is fixed in writing once the layout and products are agreed.

Do you cover TW3 in Hounslow?

Yes. We cover all of Hounslow, including TW3, TW4, TW5, TW7 and 4 more postcode districts, and nearby Isleworth, Heston and Feltham. Survey visits are free and arranged at a time that suits you.

Is the water hard in Hounslow?

Who handles building control for bathroom underfloor heating in Hounslow?

Building control for Hounslow is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

Is electric underfloor heating expensive to run in a bathroom?

Running cost depends on the heated area, the insulation under the mat, how long it runs and your electricity tariff. As an example, a 150 W per m² mat covering 3 m² draws 450 W, so two hours a day uses about 0.9 kWh. A timer and floor sensor stop it running when nobody is using the room.